Apparatus for treating feed-water



SQFPARATUSFOR TREATING FEED WATER.

APPLICATION FILED MAR. 11, I916- Patented Aug. 3, 1920.

IGNAC PIOTR WINER, OF wAnSAw, RUSSIAN POLAND.

APPARATUS FOR TREATING FEED-WATER.

Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed March 11, 1916. Serial No. 83,612.

To all whom it may concern:

Be it known that I, IGNAo PIOTR WINER, a citizen of the Russian Empire,and residing at Varsaw, Russian Poland, have invented certain new anduseful Improvements in Apparatus for Treating Feed- WVater for Boilers,of which the following is a Specification.

This invention relates to apparatus for removing any air or gas bubblesfrom feedwater, softening it and heating it to the temperature of livesteam and, particularly, to the feed-water tank provided in the upperpart of the boiler.

In apparatus for completely removing the air or gas bubbles fromfeed-water, softening it and heating it to the temperature of live steamit is of very great importance to be able to exactly control theseoperations from the outside, since the downwardly flowing water heatedto the temperature of live steam may be supplied to any desired part ofthe water space of the boiler and consequently may exercise a greatinfluence on the circulation in the boiler. For this purpose I make useof a physical phenomenon which I have discovered, namely that in thesteam space of a boiler only the water heated to the actual temperatureof the steam can flow downward through a funnel.

According to the invention the tank which collects the water heated tothe live steam temperature runs out into a tube which is led outwardthrough the boiler shell and is introduced by way of a pipe into thelower part of the water space in the boiler.

Then the feed-water heating apparatus is made in the above describedmanner it can be subjected to a proper and reliable check under allcircumstances by means of a gage glass connected either to the outerpipe and to the tank or because only the water heated to the actualtemperature of the steam can flow downward through the funnel and besupplied to the desired part of the water space, while when colder wateris used the condensation of the steam is continued and the pressure inthe tank is reduced below that in the remaining part of the boiler andconsequently the wateris compelled to flow from below upward into thetank. Under these circumstances the water-gage acts also as athermometer. The tapering of the tank, which is equivalent to providinga resistance for the flowing water, in combination with the varyingpressure over the preheated water in the tank is constantly instrumentalin raising and lowering to a greater or less amount the water-levelindicated by the gage whenever water is fed into the boiler, that is tosay in keeping the water-level periodically fluctuating, this being anecessary condition for every reliably operating checking apparatus.

To these ends, the invention consists in the construction, arrangementand combination of parts described hereinafter and pointed out in theclaim.

One illustrative embodiment of the invention is diagrammaticallyrepresented by way of example in the accompanying drawing, whereinFigure 1 is a side elevation, partly in section, showing one form of theinvention,

7 Fig. 2 is a cross-section taken through the boiler, and

Fig. 3 1s a device. Referring to Figs. 1 to 3, a tank M having the shapeof a tobacco pipe is mounted in the upper part of the boiler K, thelower tubular part M dipping into the water and the upper open bowl partprojecting out of the water. The tubular part is led outside the boilershell at a suitable place 1, where it is connected to a pipe L which isled through the shell at a second place 2 into the water space andterminates at 3. (Fig. 1.)

A suitable number of spraying nozzles e are provided on the end of thefeed pipe a, b, in the open bowl part of the tank M, and these nozzlesatomize the water supplied under pressure from the feeding device P andthrow it against the top of the boiler, against which it impacts andfalls into the tank M, as indicated by the dotted lines of Figs. 1 and2, flows through the tubular part M the pipe L connected thereto andthus arrives at the desired part of the water space in the boiler. Themouths of the nozzles are so arranged that all the sprayed and impactingwater falls back into the tank M, to which end ribs 5 (Fig. 2) may beprovided on the top wall of the boiler if desired. The sprayed feedwater is heated by top plan view of the spraying the steam in the boilerand only when it has of the steam it is impossible for it to flow alongthe described path, because as long as the water is colder than thesteam the condensation of the latter will continue and the pressure inthe tank M will be lower than in the remainder of the boiler, so thatthe water instead of flowing downward will tend to be forced upwardalong the described path, but in the reverse direction, from the lowerpart of the water space.

Means are provided for observing the working of the apparatus so as toafford a check on the proper working thereof. A horizontal pipe 9disposed above the water line of the boiler is connected at its innerend with the interior of the bowl M above the normal water line thereof.This pipe extends without thev boiler and a vertical pipe 7 constitutinga water gage is connected at its upper end with the outer end of saidpipe 9 and at its lower end with the pipe L which is connected with thetube M. The position of the water in the gage shows at once whether theapparatus is working correctly, this being the case when its level isapproximately the same as that of the water in the boiler. On thecontrary, if the apparatus breaks down, say in consequence of thefeed-water heating too slowly owing to insufficient steam reaching theatomizing space or owing to the tubular passage M, L being stopped up,the waterlevel will be temporarily or permanently very high or the gageglass will be quite filled.

The water heated to the temperature of the steam parts with more or lessof its constituents adapted to 1 form boiler scale, mostly bicarbonatecompounds, according in each case to the nature of the water and to theheight of the working pressure of the boiler. The carbonates, air andother gases which are liberated are commingled with and carried away bythe steam escaping to the place where it is used, so that they areprevented from entering into the water space in the boiler.

I claim The combination of a steam boiler, a tank disposed therein andcomprising an open bowl projecting above the normal water line into thesteam space and an inclined tube connected with the lower part of saidbowl and extending below said water line through the shell of the boilerto the exterior thereof, a pipe connected with the projected end of saidtube, extending downward and discharging into the water space of theboiler, a feed water supply pipe, a sprayer disposed in said open bowl,connected with said supply pipe and comprising upward spraying nozzlesoperative to project the feed water into contact with the steam of thesteam space, said bowl being operative to catch the returned sprayedfeed water and condensed steam commingled therewith and hold it underthe reduced pressure due to the steam condensation until it attains thetemperature of the steam, a pipe connected with said bowl above thenormal water level thereof and extended to the exterior of the boiler,and a water gage connected with the first and last named pipes fordetermining the water level within the bowl.

In testimony, that I claim the foregoing as my invention, I have signedmy name in presence of two subscribing witnesses.

IGNAC PIOTR- IVINER.

lVitnesses VVADYSLAW KosKoRL, WADYSLAW MoJ owsKI.

